Door catch



1,642,167 Sept. 13 1927- 3. MOON DOOR CATCH Filed April 1. 1926 INVENTR GEC .GS

Patented Sept 13, 1927.

GEORGE A. MOON, OF SAN FRANCISCO, CALIIIOBNIA.

DOOR CATCE.

This invention relates particularly to a friction device for holding a door closed against ordinary wind pressure and the like.

Anobject of the invention isto provide a door catchfor holding a doorclosed within a door opening and to also unction as a check that Will eliminate theslam or noise that accornpanies the uncontrolled closing of adoor.

- A further object of the invention is to provide a combined doorcheck and catch, of the riction t pe, having means thereon to regulate the d egree of. frietion and to provide a door catch that will be superior in point of simplicity, inexpensiveness of construction, positiveness of operation, and facility and convenience in use and general efliciency.

In this specificationand the annexed drawings, the invention is llustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms, and it is also to be understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying one sheet of drawings Fig. 1 represents a door catch constructed in accordance with my invention, applied in operative position between 21 door and door jamb.

Fig. 2 is a perspective view of one of the friction elements that is adapted to be positionecl on either the door ordoorjamb.

Fig. 3 is a perspective view of the complementary part of the door catch to engage the friction member that is adapted to be positioned on either the door or door jamb.

Fig. 4 is a side elevation of Fig. 3.

The present invention is particularly adapted for nee on screen doors or that type of door that is provided with a spring or other means thereon to maintain the door in a closed position. Door closing devices of this character have a tendenoy to close the door with unnecessary noise accompanied by jar and vibration which in time tendsto shake the door to pieces. My invention relates to a combinecl door check and door catch that is adapted to be utilized in connection with doors having mechanical closing means thereon, for the purpose of absorbing the shock that accompanies the uncontrolled slammin of the door, and also to hold the door in t e closedposition.

In detail, the .construction illustrated in the drawings comprises the door 1 and a door jamb or casing 2 on which I have secred a knife member 3 and clamping plate 9. The knife member 3 consists of a flat piece of metal provided with a sharpened edge 4 and with a base 5 struck out at right angles to the bottom thereof. The base 5 is provided with openings throughwhich screwsmay pass for the purpose of positioning the knife member Securely in place. The end 7 of the base 5 is re-bent at an acute angle thereto so as to approximate frictional contact with the sharpened edge of the 'knife member 3. The bent end 8, as shown in Fig. 4, engages one side of the knife member 3 S0 as to create a friction thereon to assist in holding the clamping plate, to be herein'- after described. The bent end 8 adj acent the knife member 3 also forms aprotective cover for the sharpened edge to eliminate the possibility of said member cutting or bruising anythmg that might come in contact therewith.

The friction clamping plate 9 is formed of a. strip of metal bent back upon itself to form a pair of complementary halves. The bent str1p 10 is spaced away from the plate 9 and the end 11 of the bent strip 10 is rebent to approximate frictional contact with the end 12 of the plate 9. A screw 13 is passed through the clamping plate 9 to hold the same in fixed position on 2. door jamb, and a sorew 14 is passed through the bowed part of the bent strip 10 for the purpose of exerting a squeezing pressure thereon and controlling the friotional contact between the ends 11 and 12 of the bent strip 10 and plate 9. The plate 9 is preferably adapted to be secured on the door jamb, although it would be clearly within the purview of the invention to secure the same on the door and to position the knife member on the door jamb. The contacting ends of the plate 9 and bent member 10 are flared to permit the free entry or withdrawal therefrom of the knife member 3. The length of contact between the contacting ends 11 and 12 of the plates 9 and 10, together with the thickness and. length of the knife member 3, determines the efliciency in Which the cooperatin parts will function as a check to elimina the slem or noise that accompanies the uncontrolled c1osing of the door T0 further increase the checking efficiency of the cooperating parts, I have arranged that the end 12 of the bent part 10 Wil1 enter be tween the knife 3 and bent end 8 thereo1, which Wll afford an additional checking friction. A spring actuated door With. theknife me1nber 8 thereon that is swung closed strikes ether of the flaiedends of the friction plates 9 and 10 and by reason of the closing momentum is forced to enter between the parallel 'aces thereof, thereby spending ts 01ce in entering. Thus the receiving 1nembers act as a shock absorbing medium f01 the knife 3per1nitting the door te be swung closed in a quiet 1nanner.

Having thus described this invention, what I now claim and desire t0 secure by Letters Patent is:

1. A door catch con1prising a strip of 1netal bent up0n itse1f t0 form a clamping member, said bent portion beng spaced away from the first nientioned strip and re bent te approximate contact therewith, a screw passing through the clamping member, t0 adjust the space between the bent por tion and the strip, a second screw passing through the rebent portion of said cla1nping member t0 adjust the pressnre of sad rebent spaeed avay -fr01n said first 1nentioned strip and the end thereof rebent adjacent t 0 the closed end of the clamping member te ap proXi1nate frictional contact with said fiist mentiied Strip; a screw passed through the ciamping nenbei to regulzite the space between thebent portin and the strp ,"a

second screw passng through the clannping 1ne1nber adjacent to the closed end of the cla1np t0 Iegulate the contact between the rebent portions thereof; and a knife inein ber adaptedto pass between the clarnping 1ne1nber, having an end thereof bent up'vad y into approximate contact withtb edge of said knife nember to forin a protcting shield therefoiz "11 testin1ony whereof, I havehereunto set rn y hand at San Francisco, California, this 16th day of March, 1926.

GEORGE A MQON. 

